_socket3.py 文件源码

def accept(self):
        """accept() -> (socket object, address info)

        Wait for an incoming connection.  Return a new socket
        representing the connection, and the address of the client.
        For IP sockets, the address info is a pair (hostaddr, port).
        """
        while True:
            try:
                fd, addr = self._accept()
                break
            except BlockingIOError:
                if self.timeout == 0.0:
                    raise
            self._wait(self._read_event)
        sock = socket(self.family, self.type, self.proto, fileno=fd)
        # Python Issue #7995: if no default timeout is set and the listening
        # socket had a (non-zero) timeout, force the new socket in blocking
        # mode to override platform-specific socket flags inheritance.
        # XXX do we need to do this?
        if getdefaulttimeout() is None and self.gettimeout():
            sock.setblocking(True)
        return sock, addr